IMO Mathematics Olympiad (SOF) Class 9: Questions 570  578 of 919
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Question number: 570
Question
If then the value of is ________.
Choices
Choice (4)  Response  

a.  1 

b.  1 

c. 


d. 


Question number: 571
Question
If , then the value of x is________.
Choices
Choice (4)  Response  

a.  6 

b.  8 

c.  2 

d.  4 

Question number: 572
Question
and then x = ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 573
Question
The difference between a discount of on Rs. 1000 and two successive discounts of on the same amount is ________
Choices
Choice (4)  Response  

a.  Rs. 14.56 

b.  Rs. 18.40 

c.  Rs. 22 

d.  Rs. 17.20 

Question number: 574
Question
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 575
Question
Find the remainder when is divided by .
Choices
Choice (4)  Response  

a.  2 

b.  3 

c.  3 

d.  2 

Question number: 576
Question
If the mean of 20 observations is 25 and that of another 5 observations is 14, then the mean of 25 observations is ________
Choices
Choice (4)  Response  

a.  22.8 

b.  22 

c.  15 

d.  15.5 

Question number: 577
Question
If and , then value of is________.
Choices
Choice (4)  Response  

a.  1885 

b.  1890 

c.  1895 

d.  1880 

Question number: 578
Question
A man purchases an blander whose printed price is Rs. 2200. If he received two successive discounts of and, he paid________
Choices
Choice (4)  Response  

a.  Rs. 1121 

b.  Rs. 1132 

c.  Rs. 1221 

d.  Rs. 1232 
